Double-seaming machine.



No. 693,135. Patented Feb. ll, I902.

J. G. HODGSON.

DOUBLE SE'AMING MACHINE.

(Application filed June 28, 1901. (No Model.) 2 Sheets-Sheet I.

WITNESSES 1 I IN VEN TOR.

ma mas.

' Patented Feb. II, 1902. J.. HODGSUN. DOUBLE SEAMING MACHINE.

(Applicatiofi'flled June'28, 1961.)

i 2 Sheats$haqt 2.

-(No Model.)

WITNESSES:

UNITED STATES JOHN G. HODGSON, OF MAYWOOD, ILLINOIS, ASSIGNOR TO AUTOMATIC VACUUM CANNING COMPANY, OF CHICAGO, ILLINOIS,

OF ILLINOIS.

A CORPORATION DOUBLE-SEAMING MACHINE.

SPECIFICATION forming part of Letters Patent No. 693,135, dated February 1] 1902. Application filed June 28, 1901. Serial No. 66,352- (No model.)

To to whom it may concern.-

Be it known that I, JOHN G. HODGSON, a citizen of the United States, residing in Maywood, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Double-Seaming Machines, of which the following is a specification.

The object of my invention is to provide a machine of a simple and efficient construction by means of which the covers or final heads may be double-seamed to filled cans, so as to hermetically close the same, and to simultaneously inwardly curve or collapse the top and bottom heads of the can, so that after the contents of the hermetically-sealed can have been properly cooked and sterilized and the cans again cooled the heads of the same will again resume and maintain a properlycollapsed or inwardly-curved shape necessary to distinguish perfect cans from those that are spoiled and commonly designated in the trade as swell-heads.

My invention consists in the means I employ to practically accomplish this object or resultthat is to say, it consists, in the combination, with a seaming-head furnished with double-seaming tools or rolls, of a pair of retatable can-holder chucks for clamping and rotating the can between them furnished with convex or projecting centers or faces to bear against the central portion of the heads of the can and inwardly curve the same at the instant the can is being hermetically sealed by the cooperative action of the seaming tools or rolls. As the heads of the can are thus held in the inwardly curved or collapsed position at the time the can is sealed, the heads will again assume this inwardly curved or collapsed shape or position after the cooking and sterilizing step on the cooling of the cans.

In the accompanying drawings, forming a part of this specification, Figure 1 is a side elevation of a double-seaming machine embodying my invention. Fig. 2 is a horizontal section on the broken line 2 2 of Fig. 1, and Fig. 3 is a detail central vertical section.

In the drawings, A represents the frame of the machine; B, a seaming-head furnished with a setof seaming tools or rolls 1), suitable for forming or folding the flanges of the can body and cover into a double seam.

C represents a lever for moving the seaming-head into position for operation upon the can. D is the lower rotating can-holder chuck or disk, the same having a recessed seat D, preferably of rubber, to receive the can. This can-holder chuck or disk is provided with a projecting and preferably convex shaped center or face d, which bears against the lower head F of the can F and serves to inwardly curve or collapse the same when the can is clamped between the lower chuck or disk D and the upper can-holder chuck or disk G, which has a similar projecting center g of a convex shape to bear against the upper head F of the can and inwardly curve or collapse it. The upper rotary can-holder chuck Gr is rotated, as required, from the driving-shaft H through the bevel-gears h h. The necessary reciprocating movement is imparted to one of the can-holder chucks, preferably the lower one D, by means of a treadle K and connecting-link K and lever K Any other suitable mechanism may be employed for imparting the necessary rotating and reciprocating motion to the can-holding chucks.

I claim- 7 1. In a double-seaming machine, the combination with a seaming head and tools, of a pair of rotary can-holder chucks or disks furnished with projecting centers to inwardly curve or'collapse a portion of the heads of the can from their normal position at the time the upper head is double-seamed thereto, substantially as specified.

2. The combination with a seaming-head and seaming-toohof a pair of rotating canholder chucks or disks, for clamping the can between them, provided with convex centers to inwardly curve or collapse a portion of the heads of the can from their normal position at the timeitis hermeticallysealed by doubletion of the head of the can from its normal seaming, substantially as specified. position against which it bears, substantially 3. The combination with a seaming head as specified. and tool, of a lower rotary can-holder chuck JOHN G. HODGSON. 5 and an upper rotary can-holder chuck, one Witnesses:

of said can-holder chucks having a project- H. M. MUNDAY, ing center to inwardly curve or collapse a 'por- EDMUND AnoooK. 

